They, as with all god, were never alive.
No children of Phobetor are known in Greek myth.
Children of God (English) -> παιδιά του Θεού /Phonetically paidiá tou Theoú/ (Greek)
there not alive
The Greek god and goddess that have the most children is Nyx (Night), Zeus (Lighting) , and Aphrodite (Love)
Greek gods, in Greek mythology are immortal (can't die).
If you mean first god alive, that would have to be the God of the Bible, but the first god in Greek mythology is Chaos. He gave birth to Gaia, who gave birth to the Titans, who gave birth to the Greek gods you hear about in most myths.
poseidon
Phaeton
Apollo is a ageless and immortal Greek god, so yes.
No: Hestia the Greek goddess was a virgin.
earthquakeshorsestsunamiscyclopes children